Riviera balanced

'B' for 'bodacious'? Nearly. Riviera Audio Labs' AIC10 headphone/speaker amplifier just converted one of its three line-level inputs to active balanced to add XLR versatility. Otherwise it remains a 10wpc class A no-feedback hybrid circuit with triode inputs and BJT/Mosfet gain stages plus XLR4 and 6.3mm headphone outputs on the front.